Kubota's HST fan protection

[Volfandt]

Sorry to say but, same song, different tune. The HST fan issue has been debated since 2000 and yet there are more BX's sold than any other tractor since......
If one operates a SCUT without the MMM mounted you are working on borrowed time if you don't have a skidplate installed.

As been pointed out, it dosn't matter which manufacturer, they are all vulnerable to both HST fan AND HST filter damage.
It's quite obvious that these manuf's don't consider it a major problem as their designs don't make for easy repair/replacement of the fan. Ironically, the earlier 00 & 30 series BX's are much easier to replace then the newer 50 & 60 series.

JD is completely redoing their SCUT offerings and the 2 models (basic & premium) will do away w/the fan and go w/the heat exchanger mounted in front of the radiator. The premium will have a tall price increase over the basic and both wili price higher than the other SCUTs. It'll be VERY interesting to see which model sells more. You can bet Kubota, MF. CNH and the others will be watching too.

In Kubota's case, it's doubtful they'll follow suit as this would place the BX up in one of the B's selling points. But you never know.
Dave

 

[beckmurph]

Does Kubota consider this "cooling fan" not overly important to the cooling of the HST. It seems to me Kubota considers this fan sort of a back up to cooling the HST.
If failure of the Hydraulic system on these tractors is relying on this little fan, then does Kubota think the fan is not that important?
How long would it be before failure of the hydraulics without the fan?

 

[TripleR]

Does Kubota consider this "cooling fan" not overly important to the cooling of the HST. It seems to me Kubota considers this fan sort of a back up to cooling the HST.
If failure of the Hydraulic system on these tractors is relying on this little fan, then does Kubota think the fan is not that important?
How long would it be before failure of the hydraulics without the fan?

I don't think anyone knows and as mentioned, this is not unique to Kubota, my JD2305 and BX2660 use the same design along with a couple of others. As to how long before failure that will ultimately depend on workload and ambient temperature and I don't want to be the one to find out. Sorry to hear about your misfortune; need to check mine out too.

 

[CHDinCT]

Does Kubota consider this "cooling fan" not overly important to the cooling of the HST. It seems to me Kubota considers this fan sort of a back up to cooling the HST.
If failure of the Hydraulic system on these tractors is relying on this little fan, then does Kubota think the fan is not that important?
How long would it be before failure of the hydraulics without the fan?

The fan is the main means to cool the HST oil. It blows across the HST housing and I believe there is a rudimentary radiator of sorts in front of the fan that the oil circulates through. In cooler months you don't risk too much running without it, but if your were mowing for hours and hours on a 90*+ day, you would definitely risk overheating the oil and damaging your transmission. I'd have to check, but I don't believe BX's have an HST oil temp warning light.

 

[bp fick]

BP , Is your trans cooler inline with the engine rad , and utilizing
the engine fan for oil cooling ?

Yes, the B2320 uses the radiator and there's no little fan in back.